Aluminium extrusion



FIG. 1 is a perspective view of an aluminium extrusion showing our new design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevational view, the rear elevational view being a mirror image thereof;

FIG. 4 is a bottom plan view; and,

FIG. 5 is a right side elevational view, the left side elevational view being a mirror image thereof. 

The ornamental design for an aluminium extrusion, as shown and described. 